Junctional Tachycardia - EKG Reference Caliper Time Interval: ___ seconds Key Features RhythmRegular RateFast (100-180 bpm) P WavePresent before, during (hidden) or after QRS, if visible it is inverted PR IntervalAbsent or short QRSNormal (0.06-0.10 sec) Notes Junctional Tachycardia EKG Reference Quick Links Sinus Atrial Junctional Ventricular Atrioventricular Pacemaker All